A Best Buy spokesperson told the Star Tribune it was all due to a “big mistake on the part of a few employees at one store on Friday.” He explained that Best Buy doesn’t typically sell cases of water and that the mistake occurred when employees priced the case using a single-bottle price for each bottle in the case.

“As a company we are focused on helping, not hurting affected people. We’re sorry and it won’t happen again,” the spokesperson said.

There have already been more than 500 complaints about price gouging during Hurricane Harvey, Texas Attorney General Ken Paxton told CNBC.